CN103897612A - Anti-PID (Potential-Induced Degradation) EVA (Ethylene Vinyl Acetate) encapsulating glue film for solar encapsulating material - Google Patents
Anti-PID (Potential-Induced Degradation) EVA (Ethylene Vinyl Acetate) encapsulating glue film for solar encapsulating material Download PDFInfo
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- CN103897612A CN103897612A CN201410123628.0A CN201410123628A CN103897612A CN 103897612 A CN103897612 A CN 103897612A CN 201410123628 A CN201410123628 A CN 201410123628A CN 103897612 A CN103897612 A CN 103897612A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses an anti-PID (Potential-Induced Degradation) EVA (Ethylene Vinyl Acetate) encapsulating glue film for a solar encapsulating material. The EVA encapsulating glue film is prepared from the following active ingredients in percentage by weight: 70-80% of EVA resin, 10-20% of PE (Polyethylene) resin, 1-10% of plasticizer, 0.01-5% of crosslinking agent, 0.01-5% of tackifier, 0.01-1% of antioxidant, and 0.01-1% of ultraviolet absorbent. Through adding the PE resin and the plasticizer, the glue film reduces the power attenuation of assemblies, is low in cost, obvious in effect, capable of improving the core competitiveness of the assemblies, so that the efficiency and benefits of power generation enterprises can be increased.
Description
Technical field
The present invention relates to a kind of sun power packaged material, specifically the high volume specific resistance EVA glued membrane of a kind of anti-PID.
Background technology
PID phenomenon was found in 2005 the earliest.PID full name is electromotive force induction decay (Potential-induceddegradation), and it is a kind of phenomenon that adds high strength negative voltage and assembly property is reduced on assembly.The reason that causes PID to occur is: under the array system working order of sun power crystal silicon battery assembly, if array is middle or plus earth, be negative near cell voltage in the assembly of array negative pole, and module frame voltage is 0, the negative voltage between frame and battery can cause battery efficiency decay.In actual practice, be no lack of because system bias voltage causes component power and significantly decay, some decay even can exceed 50% situation, and list but be can't see any defect in appearance from assembly.The certification of tradition crystal silicon component is to test according to IEC61215 and IEC61730 standard, has lacked the related request to the assessment of assembly long-term reliability among these standards.
PID phenomenon easily occurs under the condition of high temperature, high humidity, high pressure.About the measure that prevents that PID phenomenon from occurring, can pass through in system end array minus earth, array making alive recovery at night and Miniature inverter is installed; Also or at assembly end, by adopting the packaged material of good insulation preformance; Can also suitably adjust at cell piece end specific refractory power and the thickness of silicon nitride film.
The anti-PID performance of packaged material is current study hotspot, the novel high polymer packaged material of existing various alternative ethylene vinyl acetate copolymer EVA materials proposes in the world at present, such as the polyolefine packaged material of DOW DOW Chemical, Du Pont from aggressiveness packaged material.But the disadvantages affect such as these materials are manufactured difficulty, expensive, and transparency is lower are used, and are unfavorable for the development trend that photovoltaic industry reduces costs at present.
For EVA glued membrane, improve its volume specific resistance and can reduce the wet leakage current of assembly, improve the wet ohmic leakage of assembly, helpful to improving the anti-PID performance of assembly, improve cost lower.
Summary of the invention
the problem that invention will solve
One object of the present invention is to overcome deficiency of the prior art, and the EVA packaging adhesive film of a kind of sun power anti-PID used for packing material is provided.
for the scheme of dealing with problems
An EVA packaging adhesive film of sun power anti-PID used for packing material, it is prepared from by the following raw material calculating with weight percent:
Preferably, the VA content of described EVA resin is 20～40%, and molten value is 20g/10min～50g/10min.
Preferably, described PE resin is LDPE or HDPE, and molten value is 20g/10min～50g/10min.
Preferably, described softening agent is one or more the mixing in adipic acid ester, polyester hexanodioic acid, trioctyl trimellitate.
Preferably, described linking agent is dicumyl peroxide, 2,5-di-tert-butyl peroxide-2,5-dimethylhexane, t-tutyl cumyl peroxide, butyl-4, the mixing of one or more in 4-bis(t-butylperoxy) valerate, tert-butyl hydroperoxide carbonic acid-2-ethylhexyl.
Preferably, described tackifier are titanate coupling agent or silane coupling agent.
Preferably, described oxidation inhibitor is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 2,2-methylene radical-bis--(4-methyl-6-tert-butylphenol), 3, one or more mixing in 5-di-tert-butyl-4-hydroxy phenylpropionic acid octadecyl ester.
Preferably, described UV light absorber is Octabenzone, Octabenzone, 3,5 di-tert-butyl-4-hydroxybenzoic acid-2,4-di-t-butyl phenyl ester.
Preferably, the grammes per square metre of described EVA packaging adhesive film is 100～500g/m
2.
Preferably, described tackifier are Di(dioctylpyrophosphato) ethylene titanate, and two hydroxy acyl second two support titanic acid ester, r-methacryloxypropyl trimethoxy silane, vinyltrimethoxy silane or 3-aminopropyl trimethoxy agent silane.
Preferably, the weight ratio of described EVA resin and PE resin is 7～5:2～1, more preferably 5:1
the effect of invention
The EVA packaging adhesive film of this sun power anti-PID used for packing material, with low cost, by improving common EVA packaging adhesive film, by introducing PE resin, in glued membrane, form inierpeneirating network structure, adopt softening agent to reduce the hardness after crosslinking curing simultaneously, stop harmful metal ion transport in photovoltaic module, solve the PID problem of assembly with least cost from root.
Embodiment
Describe various exemplary embodiment of the present invention, feature and aspect in detail below with reference to embodiment.For better explanation the present invention, in embodiment below, provide numerous details.It will be appreciated by those skilled in the art that and there is no these details, the present invention can implement equally.In other example, method, means, the material known for everybody are not described in detail, so that highlight purport of the present invention.
embodiment 1
EVA resin 70%; PE resin 20%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
Concrete select materials is: the VA content of EVA resin is 30%, and molten value is 30g/10min.PE resin is LDPE.Softening agent is adipic acid ester.Linking agent is dicumyl peroxide.Oxidation inhibitor is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester.UV light absorber is Octabenzone.Tackifier are Di(dioctylpyrophosphato) ethylene titanate.
In embodiment and comparative example, the per-cent of material is weight percentage.
Through simultaneous test, in following material, specifically select, little on end properties impact.Material selection scope is:
EVA resin is 20～40% at VA content, and molten value is 20g/10min～50g/10min; PE resin is LDPE or HDPE, and fusing point can be 80～90 DEG C, and molten value is 20g/10min～50g/10min; Softening agent is one or more the mixing in adipic acid ester, polyester hexanodioic acid, trioctyl trimellitate; Linking agent is dicumyl peroxide, 2,5-di-tert-butyl peroxide-2,5-dimethylhexane, t-tutyl cumyl peroxide, butyl-4, the mixing of one or more in 4-bis(t-butylperoxy) valerate, tert-butyl hydroperoxide carbonic acid-2-ethylhexyl; Oxidation inhibitor is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 2,2-methylene radical-bis--(4-methyl-6-tert-butylphenol), 3, one or more mixing in 5-di-tert-butyl-4-hydroxy phenylpropionic acid octadecyl ester; UV light absorber is Octabenzone, Octabenzone, 3,5 di-tert-butyl-4-hydroxybenzoic acid-2,4-di-t-butyl phenyl ester; Tackifier are titanate coupling agent or silane coupling agent; can be selected from Di(dioctylpyrophosphato) ethylene titanate; two hydroxy acyl second two support titanic acid ester, r-methacryloxypropyl trimethoxy silane, vinyltrimethoxy silane or 3-aminopropyl trimethoxy agent silane.
After embodiment and comparative example in, material therefor is all selected from above-mentioned scope, no longer specifically limits.
embodiment 2
EVA resin 72%; PE resin 18%; Softening agent 5%; Linking agent 2%; Tackifier 2%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 3
EVA resin 75%; PE resin 15%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 4
EVA resin 78%; PE resin 12%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 5
EVA resin 80%; PE resin 10%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 6
EVA resin 82%; PE resin 8%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 7
EVA resin 85%; PE resin 5%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
embodiment 8
EVA resin 89%; PE resin 1%; Softening agent 6%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
comparative example 1
EVA resin 96%; Linking agent 2%; Tackifier 1%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
comparative example 2
EVA resin 95%; Linking agent 2%; Tackifier 2%; Oxidation inhibitor 0.5%; UV light absorber 0.5%, mixes through mixer, drop in casting machine, at 80 DEG C, through plasticizing extrude, stretch, traction, rolling make the EVA glued membrane that thickness is 0.50mm.
performance test
1. volume specific resistance test
Press the volume specific resistance of GB ﹨ T1410-2006 ﹨ IEC60093:1980 test EVA packaging adhesive film.
Test method: EVA coating cutting is cut into three, 20cm × 20cm glued membrane, makes sample on laminating machine, test its volume specific resistance with volume specific resistance tester.
2. photovoltaic module PID test
According to IEC62804Ed.1.0 (82/685/NP) system bias voltage tolerance test, photovoltaic module is carried out to PID test.
Test method: the EVA resin in employing embodiment, at same process, is prepared crystal silicon component under identical other material, in two 85 ageing ovens, controlling temperature is 85 DEG C, and humidity is 85%, additional-1000 volt voltage, test 96h, assembly, through the power before and after PID test, calculates attenuation.
The performance test results of the embodiment that the performance test results sees the following form.
From the test result of upper table, implement comparative example 1 and comparative example 2 and be common EVA packaging adhesive film, do not add PE resin, in its PID test photovoltaic module decay larger, all exceed 30%.In other embodiment, all add PE resin, comparatively speaking, volume specific resistance all has rising, and photovoltaic module power attenuation all makes moderate progress, and EVA resin and PE resin adding proportion differ on the PID impact of photovoltaic module, but the decay of PID measured power is controlled better.
Preferably, in the time that EVA resin and P E weight resin ratio are 7～5:2～1, volume specific resistance is larger, and PID decays lessly.Preferred, in the time that EVA resin and PE resin ratio are 5:1, volume specific resistance maximum, PID decays minimumly, meets the requirement of PID test < 5%.
In sum, the preparation of involved sun power anti-PID glued membrane used for packing material in the present invention, by adding PE resin and softening agent, the decay that solves the power of assembly, the method cost is low, successful, can improve the core competitiveness of assembly, electricity power enterprise's efficiency and income are improved.
Although with reference to above embodiment, the present invention is described,, it should be understood that and the invention is not restricted to disclosed embodiment.The scope of appended claims should make an explanation in the most wide in range scope, to contain all modification, equivalent structure and function.
Claims (10)
1. an EVA packaging adhesive film of sun power anti-PID used for packing material, is characterized in that: it is prepared from by the following raw material calculating with weight percent:
2. EVA packaging adhesive film according to claim 1, is characterized in that, the VA content of described EVA resin is 20～40%, and molten value is 20g/10min～50g/10min.
3. EVA packaging adhesive film according to claim 1, is characterized in that, described PE resin is LDPE or HDPE, and molten value is 20g/10min～50g/10min.
4. EVA packaging adhesive film according to claim 1, is characterized in that, described softening agent is one or more the mixing in adipic acid ester, polyester hexanodioic acid, trioctyl trimellitate.
5. EVA packaging adhesive film according to claim 1, it is characterized in that, described linking agent is dicumyl peroxide, 2,5-di-tert-butyl peroxide-2,5-dimethylhexane, t-tutyl cumyl peroxide, butyl-4, the mixing of one or more in 4-bis(t-butylperoxy) valerate, tert-butyl hydroperoxide carbonic acid-2-ethylhexyl.
6. EVA packaging adhesive film according to claim 1; it is characterized in that; described tackifier are titanate coupling agent or silane coupling agent; be selected from Di(dioctylpyrophosphato) ethylene titanate; two hydroxy acyl second two support titanic acid ester, r-methacryloxypropyl trimethoxy silane, vinyltrimethoxy silane or 3-aminopropyl trimethoxy agent silane.
7. EVA packaging adhesive film according to claim 1, it is characterized in that, described oxidation inhibitor is three (2,4-di-tert-butyl-phenyl) phosphorous acid ester, 2,2-methylene radical-bis--(4-methyl-6-tert-butylphenol), 3, one or more mixing in 5-di-tert-butyl-4-hydroxy phenylpropionic acid octadecyl ester.
8. EVA packaging adhesive film according to claim 1, is characterized in that, described UV light absorber is Octabenzone, Octabenzone, 3,5 di-tert-butyl-4-hydroxybenzoic acid-2,4-di-t-butyl phenyl ester.
9. according to the arbitrary described EVA packaging adhesive film of claim 1 to 8, it is characterized in that, the grammes per square metre of described EVA packaging adhesive film is 100～500g/m
2.
10. according to the arbitrary described EVA packaging adhesive film of claim 1 to 8, it is characterized in that, the weight ratio of described EVA resin and PE resin is 7～5:2～1, is preferably 5:1.
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| CN201410123628.0A CN103897612B (en) | 2014-03-28 | 2014-03-28 | The EVA packaging adhesive film of a kind of sun power anti-PID used for packing material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371577A (en) * | 2014-11-13 | 2015-02-25 | 无锡中洁能源技术有限公司 | Solar cell packaging adhesive film and preparation method thereof |
| CN104745109A (en) * | 2015-04-16 | 2015-07-01 | 中天光伏材料有限公司 | White EVA adhesive film for photovoltaic module encapsulation |
| CN107686708A (en) * | 2017-08-25 | 2018-02-13 | 浙江帝龙光电材料有限公司 | A kind of EVA packaging adhesive films of solar energy anti stick decay used for packing material |
| CN108034372A (en) * | 2017-12-27 | 2018-05-15 | 杭州福斯特应用材料股份有限公司 | A kind of photovoltaic encapsulation material EVA adhesive film of resisting potential induced degradation |
| CN111808538A (en) * | 2020-08-01 | 2020-10-23 | 浙江中聚材料有限公司 | Packaging adhesive film and solar cell module using same |
| CN114262587A (en) * | 2022-01-21 | 2022-04-01 | 盛虹石化集团上海新材料有限公司 | EVA resin composition and preparation method and application thereof |
| US11660844B2 (en) | 2017-09-27 | 2023-05-30 | Dupont Teijin Films U.S. Limited Partnership | Composite polymer films |
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| EP1150357A1 (en) * | 1998-12-07 | 2001-10-31 | Bridgestone Corporation | Cover material for solar cell, sealing film and solar cell |
| CN102632611A (en) * | 2012-04-27 | 2012-08-15 | 昊辰（无锡）塑业有限公司 | Solar cell packaging glue film |
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| EP1150357A1 (en) * | 1998-12-07 | 2001-10-31 | Bridgestone Corporation | Cover material for solar cell, sealing film and solar cell |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371577A (en) * | 2014-11-13 | 2015-02-25 | 无锡中洁能源技术有限公司 | Solar cell packaging adhesive film and preparation method thereof |
| CN104745109A (en) * | 2015-04-16 | 2015-07-01 | 中天光伏材料有限公司 | White EVA adhesive film for photovoltaic module encapsulation |
| CN107686708A (en) * | 2017-08-25 | 2018-02-13 | 浙江帝龙光电材料有限公司 | A kind of EVA packaging adhesive films of solar energy anti stick decay used for packing material |
| US11660844B2 (en) | 2017-09-27 | 2023-05-30 | Dupont Teijin Films U.S. Limited Partnership | Composite polymer films |
| CN108034372A (en) * | 2017-12-27 | 2018-05-15 | 杭州福斯特应用材料股份有限公司 | A kind of photovoltaic encapsulation material EVA adhesive film of resisting potential induced degradation |
| CN108034372B (en) * | 2017-12-27 | 2020-06-23 | 杭州福斯特应用材料股份有限公司 | Photovoltaic packaging material EVA (ethylene-vinyl acetate) adhesive film resistant to potential induced attenuation |
| CN111808538A (en) * | 2020-08-01 | 2020-10-23 | 浙江中聚材料有限公司 | Packaging adhesive film and solar cell module using same |
| CN114262587A (en) * | 2022-01-21 | 2022-04-01 | 盛虹石化集团上海新材料有限公司 | EVA resin composition and preparation method and application thereof |
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